Home / 818,205.15-1,227,500.91-257,239.65

Finding the Fourth Proportional to 818,205.15, 1,227,500.91 and 257,239.65

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Solution

The fourth proportional to 818,205.15, 1,227,500.91 and 257,239.65 is: 385,920.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,205.15 : 1,227,500.91 = 257,239.65 : x
  2. Step 2: Convert to fraction form
    818,205.15/1,227,500.91 = 257,239.65/x
  3. Step 3: Cross multiply
    818,205.15x = 1,227,500.91 × 257,239.65
  4. Step 4: Simplify right side
    818,205.15x = 315,761,901,438.03
  5. Step 5: Solve for x
    x = 315,761,901,438.03/818,205.15
  6. Step 6: Final answer
    x = 385,920.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.